A while ago, I had a bout of gastroenteritis with vomiting and diarrhea that left me completely drained. After toughing it out at home for a day, I couldn’t take it anymore and my family dragged me to the emergency room of a public hospital. Back in China, whenever I get sick, my go-to thought is to get an IV drip, as it’s believed to help you recover faster. So, I was mentally prepared for getting a saline drip in Spain this time, but the experience turned out to be quite an eye-opener.
After arriving at the ER and going through a long wait and triage process, I finally saw a doctor. I briefly described my symptoms, and after an examination, the doctor said I had a typical case of gastroenteritis with dehydration and needed an IV infusion to replenish electrolytes and fluids. I was then taken to an observation room, where a nurse skillfully inserted the needle and hung a bag of clear liquid. At that moment, I was wondering to myself how much this was going to cost.

During the infusion, I curiously looked at the bag. It said “Suero Fisiológico.” A quick search on my phone told me it was just physiological saline. Later, I chatted with a Spanish man who was also getting an IV, and he told me that in public hospitals, basic solutions like saline and glucose are covered by the public healthcare service, meaning patients don’t have to pay for them personally. Compared to the cost of IV drips in China, which can be quite expensive, this seemed incredible! What’s more, the nurses might add necessary medications to the saline, such as painkillers or anti-nausea drugs, depending on your condition.
Later, I did some more research and found that there are several types of “saline” solutions commonly used in Spanish hospitals, each with a different purpose. I’ve put together a simple table for your reference, so you have an idea in case you ever need it:
| Spanish Name | English Meaning | Main Use |
| Suero Fisiológico | Physiological Saline | To replenish fluids and electrolytes, the most common type. |
| Suero Glucosado | Glucose Solution | To replenish energy and fluids, suitable for patients unable to eat. |
| Suero Mixto | Mixed Solution | To replenish both salt and glucose simultaneously. |
| Ringer Lactato | Ringer’s Lactate | Used for severe dehydration, burns, etc.; has a more complex composition. |
Although the ER visit was a tough experience, it gave me a more direct understanding of the Spanish healthcare system. This model of providing free basic treatment really eases the financial burden on ordinary people. Of course, long waiting times are a well-known issue with public hospitals, but considering the services you receive, I think it’s still worth it. Has anyone else had a similar experience? Or do you have anything you’d like to complain about or share regarding seeing a doctor in Spain? Feel free to discuss in the comments below!